Signaling device



E. MOARD. SIGN AL-ING DE'VICE. APPLICATION man APR.25, 1918.

1,332,991 Patented Mar. 9, 1920.

Mill-lull Hi INVENTOR ATTORNEY UNITED sTaTEs PATENT O F G ERIC ,MOARD, or ssa: HAMP'roN, oomvncriourfassieivon To BE'VVIN sno'rnnns MANUFACT RING,comra vr, or, EAST HAMPTON, CONNECTICUT, A con'rona- TIQN .OI CONNECTICUT.

To all whom itrmay co ncern':

-Be it known that I, ERIo'MoARn, a citi zen of the United States, and a residentof East Hampton, in the'countyof Middlesex "whereby any one skilled in the art may 2 plate.

and State of Connecticut, have invented certain new-and useful Improvements in Signaling Devices, of which thet'ollowing 1s a. full, clear, andrexact, description,

make and'use thesamej The invention :relates to signaling I de vices, horns or alarms wherein the sound is produced through a vibratory diaphragm that' is mechanically agitated.

It. relates more particularly-to refinements of such a" device through. which a very efiicient signaling device may .be ,pro duced at a minimum cost and with very light, though substantial, construction.

-Difliculty has been j experienced in attempting to make small horns for bicycles and the like which would emit a'suificiently sharp and distinctive .tone, although the 'same principles of operationhave been successfully applied -in larger structures. 1 'It is,theref ore,*one of the objects ofthe present invention to simplify the construction of such a device so far as possibleand Referring to'fthe drawings': Figure I is ap lan'view of applied to the handleof a'"-vehic1e.*'

Fig. 2 isa view inside elevation. Fig. 3 is a sectional view with the top plate removed. Fig. 4' is a rear .view of thesound chamher and appurtenant parts.

.Fig. f5 isa fragmentary view of the cam I :In a device of this sort, it has been a common, practlce to flex a diaphragm' bv rotating acam having teeth whichwouldimpinge upon-and: move a contact or anvil member centrally fsecured to the diaphragm. 7 j H In such' devices, ordinarily, the'diame'ter of the cam memberhas been comparatively 7 small; and reliance hasv been placed upon cated. mechanism, involving gearing and.

giving it an amplified rotary movement through a gearingin order tospeed it up to give the required number of vibrations to the anvil. I

This'hasrequired a somewhat compli Specification of Letters Patent.

the'deviceas 6,'to pr'ovide a sound chamber 9-, which is 2 closedjby" a plate-"l0, except for' a slot 11, of suflicient size to p'ermit the cam plate 12,

siennm ve nnvion.

and the operating train and a weighted member tor giving a fly-wheel efi'ect to the g V H Patented Mar.:9,"1920." App1icationfiled Apri125, 1918. Serial 110.230529.

The present invention contemplatesa very compact and. very light structure in] which" the cam-wheel or vibrating}member has an oscillatory movement andis of COlIF paratively large diameter, so that its backward and forward movements will produce" a suliicient speed-of vibrationand sulfi'cient amplitude of movement for the diaphragm to take advantage of its high-pitched tones.

In (the accompanying drawings, the

vformed-in the peripheral-edge'of a cooper-- ating' casing member 6.- Between the-member 1, and member-6, is clamped the diaphragm 7, which has an anvil or strikerpiece "8,. centrally arranged therein and made adjustable. a

P T he ecasin'g member 6, is drawn out as at to project there'throughQ To the rear of this casing 6, is secured a casing13, consisting numeral 1, denotes the front plate whichis' of a" plate 14, and a rectangular box-like member 15. Theplate is scar-fed at'various points as at 16, and tangs 17, are forced over 1 Projecting through the casin -13, isa'stud 19, upon which is mounted the actuating wheel or cam 12. This cam has secured to it apinion 20, which meshes with a segmental the edge of the' plate" to hold the parts to- I gear 21, pivoted on a stud 22, and actuated by a thumb-13:11:23, which extends through an opening in the casing 13, and is pivoted to the gear segment as at 24. A spring 25,

normally holds the segmentand thumb-bar V 23, at one limit ofitsplay, I a

Theractuatinggear 12, is cupped, up from sheet metal, as illustrated, and its flanged "edge 12*, is then crimped to form the necessary serrations to impinge upon and actuate the diaphragm'i; 'lhe member 12, may, of course, be case-hardened after it iscmmped and thus give a substantially non-Wearing actuator.

The casing 13, is provided with'a suitableclamp place. 7

26, by which it may; be secured in The-operationi of the device is quite obvious. As the bar 23, is depressed, the .seg-1 release of the bar 23, permits the spring to ment 21, meshing with the pinion 20, rotates the member 12, with rapidity, causing a vibration of the diaphragm 7.= A quick retract the gear segment 21, whereupon a further vibration is imparted to the diaphragm, ,WYith the actuating member 12, of

' comparatively large diameter, a very high degree; of vibration may be imparted to the diaphragm, and, as; theqdiaphragm is arrangedinthe" closed metallic chamber 9-, a tone of unusual brilliancyis-secured.

,7 It will be observed that all partsot the tie. vice may be formed from light metal,

7 stamped to fo=rm,.and that the flatpushba-r 23,-;resting against the-plate 1-1, obviatesthe necessity o-fcomplicated guides and connections for rotating the member 12.

The member 20, may be given a maximum 7 diameter relative to the'si-ze ofthe casing used, and itwill-be obvious that a great number of teethwmay thus be brought into contact withthe anvil during a single movement of. the push bar "23;

-vIn forming this member, it is cupped up.

from sheet metal insuigtabledies and its edge is thenxcrimped inadie togive the proper and exact onformation of cam surfaces or teeth. 7 These,of course, being formed on an annular ring, give greater vibratory re-vaction than those cut from a solid bar'and, ap-

parently. the pitch and tone'of the device are enhanced by this form of actuating cam.

Comparisons oi this form of device with a form in which the teeth were cut in; the

peripheral edge of the'plateshowed nounced advantage, with all of'theother ele 'ments of the same form, construction, and

size. 1 a

N o over-running is necessary, asthe parts 7 are so light that they maybe easily set in motion by the leverage aiiorded between the point of' engagement of the push bar, the

pivot pointot the segmenhand itsgeared connection to the actuator or cam plate,

The large diameter of the cam plate. which may be substantially equal to the" diameter of thesounrl chamber, permits the .use or a comparativelv long gean, Itfollows that with thi construction a'single depression of the bar 23, an(l -immediate retraction thereof under theaction of curves or cams of the actuator;

proa face on the segmental bration of the diaphragm, by. causing the.

anvil to follow, the curves .oflthe actuator as herein .definedi a What I'claim as my invention and desire to secure by Letters 'Patent is:

V 1. In a signaling device, a two part casing, a diaphragm secured between the cask mgs, a separable rectangular casing forming a: support for and with its conta ned actuatemg mechanism providing acomplete removable unit, anactuating mechanism mount- 7 ed in the removable casing, an actuator cam forming a partof said unit aetuating mechanism, said cam mounted in and projecting beyond the separable rectangular casing and into the casing supporting the diaphragm. v

2, In asignalingdevice, a two partcas-j ing comprising a front plate and a casing forming-a soundchamben a diaphragm clamped between saidcaslngs and provided with. an adjustable anvil extending through the di hragm, a separahlerectangular cas mg provi'dlng-a-support for and incloslnga unit actuating mechanism. ,for. the diaphragm, said casing beingremovably sei curedto the casing of the sound chamber, an actuating mechanismmounted mg the rectangular casing bodily removable therewith and, I having a camprojecting beyond the casing and into thesound chamber to vibrate the diaphragm as it impinges 7 against the i ad just-able anvil, and means for moving said cam. y v

3. In combinationfwithacylindrical casing forming a soundchamber, a diaphragm operatively supported "with reference there; to, an Vachustablejanvil extending through the dia hragm, an attuatih v mechanism mountedin a-separablc rectangular casing and forming aun'it actuating'mechanism, said mechanism including a cam with its work- 7 ing face projecting, beyond the casing to en? gage the anvil, to actuate the diaphragm, a

slot in the sound casingthrough Which'said' I cam projects, and means for oscillating said cam.-

4.,,In a signaling device, a sound chamber inclose'd by a easinghaving a flange and cylindrical body-part, a diaphragm resting against the flange, a cover plate for the dia- I phragm having tangs engaging and overlapplngthe fiangeand providing a clamping means for the cas ng, cover, 'an,d diaphragm;

and an actuating mechanism for the diaphragm supported in a casing attached to the sound casingand forming therewith a complete unit actuating mechanism and having an actuating cam projecting into the sound'chamber to vibrate the diaphragm, and an adjustable anvil extending through the diaphragm to be engaged by the cam. i

5. In a signaling device, a sound chamber casing, a diaphragm clamped thereto, an ad,- justable anvil extending through the diaphragm, a casing for an actuating mechanism of rectangular form removably secured to the sound chamber casing, an oscillatory rotary cam member supported in the rectangular casing and projecting therefrom to engage the anvil of the diaphragm, a gear segment pivoted in said rectangular casing,

and engaging a pinion, said pinion adapted to rotate W1tl1 and oscillate the cam, an actuating plunger pivoted to said gear segment,

whereby the said diaphragm is permanently clamped with respect to the casing.

7. The combination in a signaling device having a main sound chamber casing, operating mechanism for flexing a diaphragm through engagement With its anvil, and a diaphragm to be held against one side of said a casing and provided with an adjustable anvil passing therethrough, said casing having I openings to receive tangs; of a cover plate for the diaphragm having tangs adapted to be swagedinto the openings of the casing, whereby the said diaphragm is clamped and relative rotation ofthecover plate and casing is prevented With respect to the casing.

8. The combination in a signaling device having a vibratory diaphragm and mechanism't'or actuating a cam forflexing said diaphragm of an actuatino cam comprising a disk having an annular ange arranged at right angles to the plane of the disk, said" flange crimped to provide undulating cam surfaces.

9. An actuating cam for vibrat ry' diaphragms comprising a 7 disk havlng astamped up annular flange arranged at right angles to the plane of the disk and crimped to provide undulating cam surfaces.

- ERIC MOARD.

1 Witnesses:

STANLEY A. BEVIN,

AMY C. WoR'rmNo'ro'N. 

